Zobrazeno 1 - 10
of 23
pro vyhledávání: '"M, Granie"'
Publikováno v:
Physiological Measurement. 16:A123-A128
This paper represents a reconstruction algorithm using a direct sensitivity matrix (DSM) approach for fast 3D image reconstruction in electrical impedance imaging. The boundary element method (BEM) is used in the construction of this matrix. The firs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::384214ccf8209807ac9b3e50c348d42f
https://doi.org/10.1088/0967-3334/16/3a/012
https://doi.org/10.1088/0967-3334/16/3a/012
Publikováno v:
Physiological Measurement. 15:A107-A114
In electrical impedance imaging, several proposed reconstruction algorithms have employed the concept of a sensitivity matrix, which can be used to relate the magnitude of a boundary voltage change of a 2D object to the change in conductivity inside
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19c6f42473fbdec7d309c04f591a940c
https://doi.org/10.1088/0967-3334/15/2a/015
https://doi.org/10.1088/0967-3334/15/2a/015
Publikováno v:
Clinical Physics and Physiological Measurement. 13:107-111
Optimal control techniques have been combined with Alessandrini's singular perturbation method and Wexler's algorithm to reconstruct images in impedance imaging. We have also considered an integral formulation of the potential problem, which has led
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da0d7871196257a511ec5280c9d7511e
https://doi.org/10.1088/0143-0815/13/a/021
https://doi.org/10.1088/0143-0815/13/a/021
Publikováno v:
Clinical Physics and Physiological Measurement. 13:139-143
In this paper, by solving the forward problem by the boundary element method, the relationship between the conductivity changes and the boundary potential differences is studied and the sensitivity coefficients are evaluated.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71e3159431843a11305650ecd8be37ce
https://doi.org/10.1088/0143-0815/13/a/027
https://doi.org/10.1088/0143-0815/13/a/027
Publikováno v:
Images of the Twenty-First Century. Proceedings of the Annual International Engineering in Medicine and Biology Society.
A two-stage method for solving an applied potential tomography problem is developed. In the first stage, using optimal control techniques, an approximation of the potential in a domain Omega is computed on the basis of what is known on the boundary o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::accb5543c095a1d904f2081519f2b6be
https://doi.org/10.1109/iembs.1989.95810
https://doi.org/10.1109/iembs.1989.95810
Publikováno v:
Proceedings of 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.
A method called the direct sensitivity matrix (DSM) method is proposed, which assumes the differentiability of the conductivity distribution with respect to boundary voltage measurement and presents similitude with the method proposed by Tarassenko (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f5be887b2fa61b765bbd0873ac8e04f
https://doi.org/10.1109/iembs.1994.411915
https://doi.org/10.1109/iembs.1994.411915
Publikováno v:
Clinical Physics and Physiological Measurement. 13:73-75
In order to characterise small samples of tissue by complex impedance measurements between 10(-6) and 20 MHz, an experimental set-up is proposed. This paper describes the methodology used and presents some preliminary results.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6c767877df6559e42eb394599b81232
https://doi.org/10.1088/0143-0815/13/a/015
https://doi.org/10.1088/0143-0815/13/a/015
Publikováno v:
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics. 13
In order to characterise small samples of tissue by complex impedance measurements between 10(-6) and 20 MHz, an experimental set-up is proposed. This paper describes the methodology used and presents some preliminary results.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a0f987d34fb2bd674422d6dce88bcb58
https://pubmed.ncbi.nlm.nih.gov/1587114
https://pubmed.ncbi.nlm.nih.gov/1587114
Publikováno v:
SPIE Proceedings.
Impedance tomography is one of the most recent imaging techniques of the human body and it needs specific reconstruction techniques. So we have developed an algorithm which, using peripheral potential values, allows the calculation of the potential d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::161753fff359e5cf293cadf5bc84b3cc
https://doi.org/10.1117/12.23658
https://doi.org/10.1117/12.23658
Publikováno v:
Canadian Journal of Zoology. 66:2133-2142
The taste buds of the oropharyngeal cavity of the bass, Dicentrarchus labrax L., were examined by scanning and transmission electron microscopy. Each bud consists of a pear-shaped grouping of clear cells, dark cells, and basal cells, sunk into the ep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9291128c55a5c28b51bb63a1c60191d0
https://doi.org/10.1139/z88-317
https://doi.org/10.1139/z88-317